Twilight stared up at the announcer woman for a time, then finally spoke up. "Excuse me, Miss?" she said cautiously.
"Yeah?" she asked. "What can I do for you?"
"Well, there's this new spell I've been working on," Twilight explained, "and I was wondering if you'd be willing to help me test it."
The woman shrugged. "Sure, why not?" she said. "Knock yourself out."
Nodding, Twilight lowered her head and focused her magic through her horn. The woman's breasts began to glow.
"Whoa!" she exclaimed. "What's this? It feels weird!"
"It's the spell," Twilight said, screwing up her face. "Now hold still."
Slowly, the woman's breasts began to expand, her tight fitting top expanding along with it to contain them. "Ooookay..." the woman commented, glancing down at them. "That feels weird..." She blushed. "Also kinda nice..."
Ratchet and Clank both stared - Ratchet slack jawed, Clank somewhat confused - as the woman's bust line expanded several cup sizes. After a time, though, Twilight lost focus on the spell, and the woman's body returned to normal.
"I like that spell!" Ratchet said with a grin.
"You would," Clank chided primly.